Microwave oven



FIG. 1 is a front perspective view of a microwave oven showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view, the left side being a mirror image thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front perspective view of a second embodiment thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a right side elevational view, the left side being a mirror image thereof; and,

FIG. 8 is a top plan view thereof.

The portions shown in broken lines are for illustrative purposes only and form no part of the claimed design. 

We claim the ornamental design for a microwave oven, as shown and described. 